Safety protection device for elevator car roof maintenance

The utility model discloses a safety protection device for elevator car roof maintenance, which comprises photoelectric sensors, a control circuit and an alarm, the photoelectric sensors are arranged in the rear side, the left side and the right side of a car roof guardrail, each photoelectric senso...

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Bibliographische Detailangaben
Hauptverfasser:	MENG FEIXIANG, JI HAISHENG, QIU LINHAI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ELEVATORS ESCALATORS OR MOVING WALKWAYS HAULING HOISTING LIFTING PERFORMING OPERATIONS TRANSPORTING
Online-Zugang:	Volltext bestellen
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